package com.lagou.service.impl;

import com.lagou.base.StatusCode;
import com.lagou.dao.CourseContentDao;
import com.lagou.dao.impl.CourseContentDaoImpl;
import com.lagou.pojo.Course;
import com.lagou.pojo.Course_Lesson;
import com.lagou.pojo.Course_Section;
import com.lagou.service.CourseContentService;
import com.lagou.utils.DateUtils;

import java.util.List;

/**
 * 课程内容管理Service层的管理
 */
public class CourseContentServiceImpl implements CourseContentService {

    CourseContentDao contentDao = new CourseContentDaoImpl();

    @Override
    public List<Course_Section> findSectionAndLessonByCourseId(int courseId) {
        List<Course_Section> section = contentDao.findSectionAndLessonByCourseId(courseId);
        return section;
    }

    @Override
    public Course findCourseByCourseId(int courseId) {
        Course courseByCourseId = contentDao.findCourseByCourseId(courseId);
        return courseByCourseId;
    }

    @Override
    public String saveSection(Course_Section section) {
        //1.补全章节信息
        section.setStatus(2); //状态 0 隐藏 ，1待更新，2 已发布
        String date = DateUtils.getDateFormart();
        section.setCreate_time(date);
        section.setUpdate_time(date);
        //2.调用dao
        int row = contentDao.saveSection(section);
        //3.根据是否插入成功，封装对应信息
        if (row > 0) {
            //保存成功
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }

    @Override
    public String updateSection(Course_Section section) {
        //1.补齐信息
        String date = DateUtils.getDateFormart();
        section.setUpdate_time(date);

        //2.调用DAO
        int row = contentDao.updateSection(section);

        //3.判断是否插入成功
        if (row > 0) {
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }

    @Override
    public String updateSectionStatus(int id, int status) {
        int row = contentDao.updateSectionStatus(id, status);
        //判断是否修改成功
        if (row > 0) {
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }

    //保存课时信息
    @Override
    public String saveLesson(Course_Lesson lesson) {
        //1.补全章节信息
        lesson.setStatus(2); //状态 0 隐藏 ，1待更新，2 已发布
        String date = DateUtils.getDateFormart();
        lesson.setCreate_time(date);
        lesson.setUpdate_time(date);

        int row = contentDao.saveLesson(lesson);
        if (row > 0) {
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }

    @Override
    public String updateLesson(Course_Lesson lesson) {
        //1.补齐信息
        String date = DateUtils.getDateFormart();
        lesson.setUpdate_time(date);
        //2.调用DAO
        int row = contentDao.updateLesson(lesson);

        //3.判断是否插入成功
        if (row > 0) {
            String result = StatusCode.SUCCESS.toString();
            return result;
        } else {
            String result = StatusCode.FAIL.toString();
            return result;
        }
    }


}
